AU6390198A - Motion transforming apparatus - Google Patents

Motion transforming apparatus Download PDF

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Publication number
AU6390198A
AU6390198A AU63901/98A AU6390198A AU6390198A AU 6390198 A AU6390198 A AU 6390198A AU 63901/98 A AU63901/98 A AU 63901/98A AU 6390198 A AU6390198 A AU 6390198A AU 6390198 A AU6390198 A AU 6390198A
Authority
AU
Australia
Prior art keywords
screw
tube
driven
guide
nut
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
AU63901/98A
Other versions
AU730268B2 (en
Inventor
Vladislav Poulek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of AU6390198A publication Critical patent/AU6390198A/en
Application granted granted Critical
Publication of AU730268B2 publication Critical patent/AU730268B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/68—Operating devices or mechanisms, e.g. with electric drive
    • E06B9/72—Operating devices or mechanisms, e.g. with electric drive comprising an electric motor positioned inside the roller
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/04—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying rotary motion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H2025/2028—Screw mechanisms using screw profiles with high efficiency for converting reciprocating motion into oscillating movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H2025/2062—Arrangements for driving the actuator
    • F16H2025/2075—Coaxial drive motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
    • F16H25/2204—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18568—Reciprocating or oscillating to or from alternating rotary
    • Y10T74/18576—Reciprocating or oscillating to or from alternating rotary including screw and nut
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18888—Reciprocating to or from oscillating
    • Y10T74/18984—Inclined ramp

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Transmission Devices (AREA)
  • Discharge Heating (AREA)
  • Glass Compositions (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

A tube motor having an electric motor which is placed in a tube and the electric motor is coupled to a screw transmission including two screws with different pitches and a guide rod, whose driven screw and guide rod are arranged in-line on the common axis and manufactured as a single piece, placed rotatable, axially immovable driven nut and in an immovable guide profile, the electric motor being fixed at one end of said stationary tube and the driven nut being rotatably but axially immovable coupled to the other end of the stationary tube; whereby the pitch of said driven screw is high enough that the whole screw transmission is self-locking with respect to an external torque.

Description

WO 98/49464 PCT/CZ98/00016 1 A Tube motor Technical Field The invention relates to the field of tube motors with velocity reducing screw and-nut transmission. 5 Background Art Tube motors with screw-and-nut transmission is described for instance in a German Patent DE 3121136. State of the art in tube motors and screw-and-nut transmissions is represented by following patents: GB 857,203, DE1957658, US 2,818,743 a US 4,723,453. Existing tube motors use screw transmission where 10 both guide and driving nuts are manufactured by milling of both axial and helical groove on tube and both guide and driving nuts are coaxial. Disadvantage of such an arrangement is in that it cannot work at high specific torques, related to the cross-section of the transmission. Otherwise are usually used tube motors with planetary gearbox which, however, have the same 15 disadvantage. Disclosure of Invention The present invention avoids mentioned disadvantages of the prior art. The invention is characterized in that a tube motor, including electric motor preferably with hollow axle placed in a tube and coupled to the screw transmission with two 20 screws with different pitches which are placed in two rotatable axially immovable nuts and a guide mechanism, and comprising a driven screw with a guide mechanism arranged coaxially in-line as single piece and placed in rotatable, axially immovable driven nut and in an immovable guide profile while an electric motor, a driving screw, a driving nut, the guide mechanism and a guide profile 25 are placed in a tube while the electric motor and the guide profile are fixed to the tube and to the end of the tube is rotatably coupled axially immovable driven nut and in the driven nut is placed the driven screw. The pitch of the driven screw WO 98/49464 PCT/CZ98/00016 2 is high enough that the screw transmission is self-locking with respect to an external torque. Arrangement of the motor and the screw transmission according to the invention enables to maximize the torque of the apparatus with at a given cross-section of 5 the tube motor, because the guide and driven rod, the guide mechanism and the driven nut can be made just fill-in to the cross-section of the tube. The self locking transmission protects the driving screw and the electric motor againstt external torque. The driven screw and the guide rod can be manufactured of a single piece of 10 the same cross-section e.g. three- to octangular rod and/or of a rod with two- to eight grooves, while the screw can be manufactured on a part of the rod by hot or cold twisting. Manufacturing of driven screws by forming of a part of the guide rod is quick and easy. Use of standard profile rods, especially square, enables to use also 15 standard tools for manufacturing of nuts. It reduces price substantially. The guide mechanism of the driven screw is at least triangular rod placed in the guide profile and/or, for reduction of friction, it is represented by at least two rotatable wheels placed on axles which are fixed at the end of the driving screw perpendicularly to the longitudinal axis of the driven screw, said wheels beeing 20 placed in the guide profile which is manufactured in the tube coaxially with the longitudinal axis of the driven screw. The clutch 'on the driven screw enables to compensate misalignment between the driven screw and the guide rod. It enables to increase manufacturing tolerances. 25 Use of driving ball screws substantially increases mechanical efficiency of the apparatus. Use of the electric motor with a hollow axle reduces the design length of the apparatus. Use of the electric motor with gearbox enables to increase WO 98/49464 PCT/CZ98/00016 3 transmission ratio of the apparatus. Use of the auxiliary output tube on the driven nut enables easy attachment of driven loads. Brief Description of Drawingqs Figures schematically show examples only of the arrangement of the tube 5 motor according to the invention. Figure 1. shows arrangement with guide mechanism composed of the square guide rod, with the drivig screw placed in the auxiliary tube and of the guide profile represented by the guide nut. Figure 2 shows arrangement of the apparatus with four-groove guide rod and with ball screw placed in the hollow axle of the electric motor. Figure 3 shows arrangement 10 of the apparatus with square guide rod, with ball screw placed in the hollow axle of the electric motor and with guide mechanism with two rotatable wheels. Examples of Execution of the Invention Example 1 On Figure 1. the tube motor comprises electric motor 7, square guide rod 2, 15 screw transmission with two screws and two nuts with different pitches and the driving screw 3 is placed in the auxiliary tube 8. The driven screw I and the guide rod 2 are made of single piece so that the twisted part of the guide rod 2 creates the driven screw 1. The driven screw I and the guide rod 2 are of the same cross section and the driving screw 3 , the driven screw 1 and the guide rod 2 are 2o placed in-line on a common axis and the drivig nut 4, guide profile 5, represented in this case by the sliding nut fixed to the tube 11, and the driven nut 6 are also placed in-line on a common axis. Between the electric motor 7 and the driving screw 3 is placed the gearbox 9. The electric motor 7, driving nut 4, the driving screw 3, guide mechanism 5, the guide rod 2 and the driven nut 6 are placed in 25 the common tube 11. The driving screw 3 is provided by the clutch 12 for compensation of misalignment. The driven nut 6 is fixed to the output tube 13. The apparatus works as follows. The driving screw 3 driven by the electric motor 7 shifts. by use of the drivina nut. 4 the auide rod 2. The driven crew I is WO 98/49464 PCT/CZ98/00016 4 made on the part of the guide rod 2. As the driven screw I moves through the driven nut 6 the linear movement is transformed to the rotational movement. If the external toque is higher than the torque of the motor the self-locking transmission locks the apparatus. 5 Range of rotation is approximately 3600 in this arrangement. Example 2 On Figure 2. the tube motor comprises the four-groove guide rod 2, the ball driving screw 3 placed in the hollow axle 8 of the electric motor 7 and the screw transmission with two screws and two nuts with different pitches. The driven 10 screw I and the guide rod 2 are made of single piece so that the twisted part of the guide rod 2 creates the driven screw 1. The driven screw I and the guide rod 2 are of the same cross-section and the driving screw 3, the driven screw I and the guide rod 2 are placed in-line on a common axis and the drivig nut 4, the guide profile 5, and the driven nut 6 are also placed in-line on a common axis. The 15 driven nut 6 is fixed to the output tube 13. The apparatus works in the same way as the apparatus in example 1. The driving nut 4 driven by the electric motor 7 shifts, by use of the driving screw 3 the guide rod 2. The driven crew I is made on the part of the guide rod 2. As the driven screw 1 moves through the driven nut 6 the linear movement is 20 transformed to the rotational movement. Example 3 On Figure 3. the tube motor comprises the guide mechanism including two rotatable wheels 14 e.g. ball bearings placed on the axle 10 which is fixed by the end of the driving screw 1 perpendicularly to the longitudinal axis of the driven 25 screw 1, the ball driving screw 3 placed in the hollow axle 8 of the electric motor 7 and the' screw transmission with two screws and two nuts with different pitches. The driven screw I and the guide mechanism are made of single piece and the driving screw 3, the guide mechanism and the driven screw 1 are placed in-line WO 98/49464 PCT/CZ98/00016 5 on a common axis and the drivig nut 4, the guide profile 5, and the driven nut 6 are also placed in-line on a common axis. The driven nut 6 is fixed to the output tube 13. The guide mechanism of the driven screw I is placed in the guide profile 5 which is manufactured and fixed in the tube 11 coaxially with the longitudinal 5 axis of the driven screw 1. The apparatus works the same way as the apparatus in example 2. The driving nut 4 driven by the electric motor 7 shifts, by use of the driving screw 3 the guide mechanism in the guide profile 5. The guide mechanism is fixed at the end of the driven crew 1 . As the driven screw I moves through the 10 driven nut 6 the linear movement is transformed to the rotational movement. Preceding description of the arrangement of the tube motor shows only some variants of the apparatus and does not represent all existing variants of the apparatus possible according to the invention. By the tube motor according to the invention it is possible, among other, to interchange the location of the guide nut 15 and rod with driven nut and rod. At least one transmission nut and at least one transmission screw should be made of stainless steel and/or should be provided with sliding film based either on PTFE or on molybdenum disulfide and at least one screw should be provided with trapezoidal thread. Industrial Applicability 20 The tube motor according to the invention is applicable in any equipment where high torque limited range movement is needed e.g. in solar trackers, rotators of antennas, door opening mechanisms etc.

Claims (10)

1. A tube motor comprising an electric motor, which is placed in a tube and which is coupled to a screw transmission which includes two screws with different pitches which are placed in two rotatable axially immovable nuts and a guide mechanism 5 c h a r a c t e r i z ed in t h a t a driven screw (1) and guide mechanism of the driven screw (1) represented by a guide rod (2) are arranged in-line on the common axis and it is of single piece and are placed in rotatable axially immovable driven nut (6) and in an immovable guide profile (5) while an electric motor (7), a driving screw (3), a driving nut (4), the guide rod (2) and a guide profile (5) are placed in 10 a tube (11) and the electric motor (7) and the guide profile (5) are fixed to the tube (11) and to the end of the tube (11) is rotatably coupled axially immovable driven nut (6) and in the driven nut (6) is placed the driven screw (1), while the pitch of the driven screw (1) is high enough that the screw transmission is self-locking with respect to an external torque. 15
2. The tube motor according to claim 1 characterized in that the guide mechanism of the driven screw (1) comprises at least two rotatable wheels (14) placed on an axle (10) which is fixed by the end of the driving screw (1) perpedicularly to the longitudinal axis of the driven screw (1) and wheels (14) are placed in the guide profile (5). 20
3. The tube motor according to claim 1 characterized in that the guide mechanism of the driven screw (1) is formed by a guide rod (2) of at least triangular cross-section placed in the guide profile (5) and the driven screw (1) is represented by a twisted part of the guide rod (2). 25
4. The tube motor according to claim 1 characterized in that the guide mechanism of the driven screw (1)is represented by guide rod (2) with at least two grooves and placed in the guide WO 98/49464 PCT/CZ98/00016 7 profile (5) and the driven screw (1) is represented by a twisted part of the guide rod (2).
5. The tube motor according to claims 1 to 4 characterized in that the electric motor (7), the driving nut (4), the driving screw (3), the driven nut (6) and the guide profile (5) are placed in the common tube (11). 5
6. The tube motor according to claims 1 to 5 characterized in that the driving screw (3) is provided by a clutch (12) between the driving screw (3) and the guide rod (2)
7. The tube motor according to claims 1 to 6 characterized in that thedriving screw (3) is a ball screw. 10
8. The tube motor according to claims 1 to 7 characterized in that the driving screw (3) is placed in the tube (8) and to the tube (8) is fixed the driving nut (4).
9. The tube motor according to claims 1 to 8 characterized in that between the electric motor (7) and the driving 15 screw (3) is placed a gearbox (9).
10 O.The tube motor according to claims 1 to 9 c h a r a c t e r i z ed in t h a t to the driven nut (6) is coaxially fixed the output tube (13).
AU63901/98A 1997-04-30 1998-03-31 Motion transforming apparatus Ceased AU730268B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CZ1318-97 1997-04-30
CZ19971318A CZ290598B6 (en) 1997-04-30 1997-04-30 Power-operated mechanism for swinging wings
PCT/CZ1998/000016 WO1998049464A1 (en) 1997-04-30 1998-03-31 A tube motor

Publications (2)

Publication Number Publication Date
AU6390198A true AU6390198A (en) 1998-11-24
AU730268B2 AU730268B2 (en) 2001-03-01

Family

ID=5463111

Family Applications (1)

Application Number Title Priority Date Filing Date
AU63901/98A Ceased AU730268B2 (en) 1997-04-30 1998-03-31 Motion transforming apparatus

Country Status (8)

Country Link
US (1) US6253632B1 (en)
EP (1) EP0979362B1 (en)
AT (1) ATE228622T1 (en)
AU (1) AU730268B2 (en)
CZ (1) CZ290598B6 (en)
DE (1) DE69809731T2 (en)
ES (1) ES2187935T3 (en)
WO (1) WO1998049464A1 (en)

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GB0327457D0 (en) * 2003-11-26 2003-12-31 Goodrich Actuation Systems Ltd Linear actuator
EP1791184A1 (en) 2005-11-29 2007-05-30 Dr. H. Frauenknecht GmbH Solar power system and method of operation
CN100348832C (en) * 2006-10-18 2007-11-14 南京康尼机电新技术有限公司 Locking mechanism of passive spiral door machine
GB0702791D0 (en) * 2007-02-14 2007-03-28 Rolls Royce Plc Linear actuator
EP2147615B1 (en) * 2008-07-22 2011-05-18 Karlheinz Baumeister Rotary drive
FR2946617B1 (en) * 2009-06-10 2012-11-16 Sagem Defense Securite DEVICE FOR ACTUATING AN AIRCRAFT GOVERNMENT.
GB0910752D0 (en) * 2009-06-23 2009-08-05 Rolls Royce Plc An annulus filler for a gas turbine engine
GB0914060D0 (en) * 2009-08-12 2009-09-16 Rolls Royce Plc A rotor assembly for a gas turbine
US8789589B2 (en) * 2009-12-21 2014-07-29 Schlumberger Technology Corporation Coiled tubing orienter tool with differential lead screw drive
US8455806B2 (en) 2010-01-18 2013-06-04 Sunpower Corporation Photovoltaic assembly for use in diffuse weather conditions and related methods
DE102010011075B4 (en) * 2010-03-11 2012-04-05 Howaldtswerke-Deutsche Werft Gmbh closure device
GB2478918B8 (en) * 2010-03-23 2013-06-19 Rolls Royce Plc Interstage seal
DE102010019344B3 (en) * 2010-05-05 2011-05-19 Stabilus Gmbh Drive devices for flap of vehicle, have housing part that is connected with fixed base part or with movable component
FR2992497B1 (en) * 2012-06-22 2015-05-29 Valeo Systemes Thermiques DEVICE FOR CONTROLLING A MOBILE ORGAN IN ROTATION AND INSTALLATION EQUIPPED WITH SUCH A CONTROL DEVICE.
CN103807398B (en) * 2013-12-17 2016-02-17 兰州空间技术物理研究所 A kind of composite sport mechanism
DE102016203265A1 (en) * 2016-02-29 2017-08-31 Stabilus Gmbh Actuator assembly and flap control device with an actuator assembly
CN108708951A (en) * 2018-06-22 2018-10-26 青岛科技大学 A kind of linear motion and rotating motion transformer of coaxial line
US11466760B2 (en) * 2019-05-24 2022-10-11 Nextracker Llc Actuator systems for solar trackers
CN112252955B (en) * 2020-09-30 2022-04-19 嘉兴市鹏升机电有限公司 Clutch device of tubular motor and use method
CN112503155B (en) * 2020-11-27 2022-12-23 四川省机械技术服务中心有限责任公司 Compact oscillating reduction gear
FR3122911B1 (en) * 2021-05-11 2023-09-01 Ixblue Movement transmission and transformation device and vehicle equipped with such a device

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Also Published As

Publication number Publication date
ATE228622T1 (en) 2002-12-15
DE69809731D1 (en) 2003-01-09
EP0979362A1 (en) 2000-02-16
DE69809731T2 (en) 2003-09-11
AU730268B2 (en) 2001-03-01
EP0979362B1 (en) 2002-11-27
ES2187935T3 (en) 2003-06-16
WO1998049464A1 (en) 1998-11-05
CZ290598B6 (en) 2002-08-14
CZ131897A3 (en) 1998-11-11
US6253632B1 (en) 2001-07-03

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